I've visited the store once, when in Paris for work.
From the moment you enter the store you're engulfed in vintage MOC toys. They're all around you
Luluberlu has been around for ages, and sells online as well. They stock up on vintage MLP regularly, but it ranges from G1 all through G3 - their prices for G1 are acceptable, but G2 is simply nuts IMO.
It really depends on what you're looking for and when you check their inventory. But again, yes, Luluberlu is well known for awesome eighties toys stuff!